RE-NEET Botany Principles Of Inheritance And Variation Class 12 Questions

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: In an experiment, Mendel observed that the F₁ progeny plants are all tall and none are dwarf. Reason R: Stem height is a contrasting trait, with tall being dominant and dwarf being recessive. In the light of the above statements, choose the most appropriate answer from the options given below:

For a person with blood group ‘O’, which of the following is not a possible combination of parents’ blood group genotypes?

Given below are two statements: Statement I: Down's syndrome is caused by the absence of one of the X⁻chromosomes. Statement II: Turner's syndrome is caused by the presence of an additional copy of the chromosomes. In the light of the above statements, choose the correct answer from the options given below: